Welding-burner.



` H. H. LANNING.

WELDING BURNER.

APPLICATION FILED ooT,6, 1911.

Patented Sept. 17,1912.

@Trittin .fhtlldhl'll @Flllltllll Howlin-n H. LANNING, or TOPEKA,Kansas, Assrenon or ons-HALF To HENRY w. JACOBS, or morena, Kansas.

WELDING-BURNER.

weaves.

Specification of Letters Patent. PatQHt-Qd'gptg, 11?', 1912],

`Application filed October 6, 1911. Serial No. 653,180.

To El whom t may concern lie it known that I, HOWARD H. LANMNG, acitizen of the United States, and resident of Topeka, in the county ofShawnee and Stateof Kansas, have invented certain new and usefullmprovements in VVelding-Burir ers, of which the following is adescription, reference being had to the accompanying drawing, whichforms a part of my specification.

My'invention relates to a welding burner `uherein pure oxygen and someother suitable gas suehl as acetylene, hydrogen, natural or illuminatinggas, is intended to be used to produce a blow pipe flame suitable forwelding purposes.

The object of my invention is to produce a burner which will be lightand durable and which can be manufactured and main tained at theleastlpossible cost.

A further object of my invention is to produce a composite burner, thecomponent parts whereof will be readily accessible and at the same timeeasily removable for repairs or displacement without disturbing therelation of other parts. and without necessitating the entiredismantlement of the burner.

Another object of the invention is the production of a burner whoseconstruction will permit the use of acetylene or other comlbustiblegases under the low pressure at which such gases are usually suppliedand atI which it is safest, most convenient and economical to generatethem, as will be more fully 'understood from the following detaileddescription.

ln the drawing:*Figure 1 isla partial longitudinal sectional view andpartial side elevation of my improved burner. Fig. 2 is a longitudinalsectional view of the burner head and mixing chamber end of the device.F ig. 3 is a cross sectional View taken on the line 3 3 of Fig. 2looking in 'the direction of thearrows. Fig. 4 is a. detailed view inperspective, to more clearly illustrate the Yconstruction of the inneror oxygen nozzle.

Fig. 5 a1 detailed view in perspective to more clearly illustrate theconstruction of the main or outer nozzle.

ln the exemplification of my invention disclosed in the drawing, (E and7 are .suit

able stopcocks which are intended lo be con- .nected to suitableconduits leading to differ# ent sources of proper gas supplies: that is,the cock (i is connected with a supply of v like oxygen, while cock 7 isconnected with a supply of acetylene or other suitable gas. The stopcocks (l and 7 are preferably secured to or screwed into a breech blockS which is provided with ducts or passages 9 and 10. The breech block 8is removably held in place against one end of the handle portion 11 bythe knurled sleeve 12, which .screws onto handle portion 1l. The handle11 is provided with a chamber 13, which is adapted to receive suitablefiltering material such as mineral wool, felt, asbestos, er the and oneend of the chamber being preferably provided with wire netting ofsuitable mesh as at 14, whereby the4 filtering pack is held away fromthe outlet end of the chamber. The handle 11 is also provided with aseparate passage or duet 15 -which communicates with the passage 9 -inthe breech block, while the passage 10 in the breech block communicateswith chamber 13. The opposite end of handle 11 is pro vided with a pipe16 which is secured in an outlet opening or port of chamber 13, and alsowith a pipe or tube 17, which connects with the passage or duct 15 inthe handle. The other end of pipe 1G is connected to a T-head 1S andcommunicates with a chamber 19, see Fig. 2.

The upper part of the T-head 18 is internally threaded to receive theexternally threaded sleeve 20. The upper end'of sleeve 2O is reducedandinternally threaded as at 21, where it receives the upper, externallythreaded end of the inner nozzle 22. ln or; der that sleeve 20 may beheld in its adjusted position in the upper end of the T-head 18, l,provide a lock nut 23 which engages the external threads on sleeve 20and screws down onto a suitable gasket or washer 24 whereby a tigl'itjoint between sleeve 20 and the 'IT-head '1,8 is provided, which willprievent the leakage of gas around the threads. :l gasket or washer 29is preferably inserted between the reduced portieri of sleeve 20 and anannular lflange 30 on theinner nozzle 22, so as to insure a tight` jointbeing made between nozzle Q2 and sleeve 20.

f he upper end of sleeve 20 has secured to it a tubular tip 25,v one endof which is provided with a flange 26 which bears against a. gasket E27.The tip 25 1s held in place by a cap nut 28 which screws onto sleeve 20.The tubular tip 25 receives the end of tube or `pipe 17, which issecurely ywill be slightly removed from tip fastened therein, either' bybeing soldered or secured in any other suitable manner.

lThe lower end of the inner nozzle 22 is providedwith an annular flange31 whereby the nozzle is maintained in a central position within T-head18. This annular flange 31 is provided with a series of portsl cr slots32, arranged about its periphery, so as to permit of communicationbetween the upper and lower portions of chamber 19 in the T-hcad 18. Thelower end of im-head 18 is slightly contracted and internally threadedso as to receive the threaded shank or end of an outer or main nozzle34; aportion of the nozzle 34 being preferably made hexagonal in shapeto permit of the use of a wrench whereby the screwing ofthe main nozzleinto the T-head 18 is facilitated. The shanlr'or upper end of the mainnozzle 34 is made to extend beyond its threaded port-ion so as to abutagainst the flange portion 31 of inner nozzle 22, and adjacent to itstip 35 without interfering with the slots or ports Thevshanlr'33 isprovided with ports or perforations 3G arranged in-circumferen tialmanner at a point below the upper end, so that when nozzle 34 is inplace, the port-s 35, as clearly shown in Fig. 2. The main nozzle 34 isproridedwith a tapering bore or coni` cal chamber 37, provided with anelongated' orifice or mouth In ,the employment of my improved burner,the oxygen is allowed to pass through cock 6, when the latter is open,and flow through the passage 9 in breech block S, into the passage orduct 15 in handle l1, and thence through tube 17 and its connectionsintothe inner nozzle 22 and out through its tip 35 into bore or mixingchamber 37 in main nozzle 34, above perforations or ports 36. Theacetylene, or other suitable gas, is

admitted through cock 7, by. which its flow may be controlled, into thechamber 13 of handle 11. [is previously stated, chamber 13 is providedwith a suitable filter paci;v of mineral wool, felt, asbestos, or thelike, so as to prevent impurities or solids being carried beyond chamber13. The liltered acetylene, or other gas, passes outI of chamber 13 intopipe 16 and into the chamber 19 in T head 18; from chamber 19, theacetylene passes through the ports or slots 32 into the lower part ofchamber 19 from whence it passes through ports 36 and into the mixingchamber 37 beneath the point where the oxygen enters said chamber. Herethe acetylene diffuses with the oxygen, so that a mixture of oxygen andacetylene will be discharged through the orifice or mouth 38 of mainnozzle 34, at which point combustion takes place.

By reason of the manner of vseeming the inner nozzle 22,; within theT-head 18, namely` through the medium of sleeve 20,

essary distance. The sleeve 20, together with the inner nozzle 22, willbe held in its adjusted position by the lock nut 23.

The bore or mixing chamber 37 of main nozzle 34 is preferably madeconical as previously stated, although it may be madeany suitable shapeto adapt it to different requirernents; it is important, however, thatthe walls ofthe mixing chamber 37 be absolutely smooth, and that theorifice or mouth 33 thereof be perfectly round, as clearly shown in Fig.v2, otherwise, the flame is-very apt to flash or strike back through theorifice or mouth 38 and set. tire -to the mixed gases within chamber 37.This would soon result in the absolute destruction of the nozzle. Asthe. main nozzle isnot only subjected to ,intense heat but is -als'osubjected to more or less abuse whereby its mouth or orifice is apt tobe distorted, it would be necessary under ordinary conditions todiscardthe nozzle; but in order to extend the life'of the nozzle, I havemade the mouth or orifice cylindrical for a short distance back, so thatany distortion at. the mouth may be corrected by tiling off a suiiicientportion, without, however, altering or interfering with the shape andsize of the mixing chamber 37. Should the main nozzle become defective,it is evident 'that a new one can readily be inserted in the T-headwithout necessitating the renewal of any of the other` parts lof theburner. By providing the main nozzle 34 with its extended end or shanli33, which encirclesthe tip of inner nozzle 22, it is evident that amixing chamber is produced by the close contact between the two members.This permits of the employment of an inner nozzle having a tip ordischarge orifice of the desired size without requiring a differentouter or main nozzle, so that either one of the nozzles may be"re placedwithout the necessity of changin the other. l

The dimensions of mixing chamber 3.7, the i size of the orifice in tip35' and its position relative'to the ports 36, all depend upon the gaspressures used aswell as upon the diameter of the orifice or passage 38at the mouth of the main nozzle; and the proper diameter of passageBS isdeterminedl by the class of welding that is desired to, be done; forinstance, the welding of heavy pieces of metal requires a relativelyLarger passage than that required for lighter work. With my improvedconstruction, therefore, itjis apparent that a number of nozzles 34 pro-130v vided with passages 38 of different sizes may be interchanged, thusadapting my improved burner to different requirements, and obviatingthenecessity of an entirely different burner. The same is true inconnection with the inner or oxygen'nozzle 22, as it is evident from theconstruction shown and described that inner nozzles ot' various lengthsbeyond flange 3l may be employed, providedi\ith tips 35 having orificesof different sizes. By choosing, therefore, the proper combinations ofinner or oxygen nozzles and outer or main nozzles, thel burner can bequickly adjusted for any class of welding, as well as other varying gaspressures within reasonable limits.

As previously described, t-he filter pack inclosed in chamber 13 ispreferably made of some non-combustible substance, but of a nature thatwill permit of the passage-of y gas. The filter pack serves'the doublepurpose of filtering the gas so as to prevent particles of solid matterbeing carried by the gas to the burner-tip where itwouldl clog u'p thesmall orifices or affect the chemical or physical ropert-ies of theHaine, and also prevents ille propagation of any ame or explosion of thesource of gas supply.

By having the different gas controllin means or cocks secured to thebreech bloc or member 8, it is evident that the breech block can bereadily removed for the purpose of cleaning or renewing the filter packwithin handle 11. The construction of han`- dle 11 and breech block 8,together with the mannerof securing the two together, permits of readyaccess to chamber 13 without the necessity of disconnecting any pipes ortubes, 'it merely being necessary to close cocks 6 and 7 and therebyshut oif the HOW of the gases. Another advantage result-ing from theconstruction shown and the lmanner of connecting the-.handle and breechblock, is that another form of breech block, for instance one having athird cock for an auxiliary jet of oxygen to be used for cuttingpurposes, can be easily and quickly applied in place of the one used forthe usual or ordinary run of work in connection with which burners ofthis class are used.

I have shown and described what I believe to be the;- simplest and bestconstruction of my invention, but the same may be altered in certaindetails as practice may dictate without, however, departing :from thespirit of my invention, and I do not wish tobe understood, therefore,aslirniting myself to the exact construction shown and described, but

lVhat l claim and wish to secure by Let" ters Patent, is:-

1. A burner of the class described, comprising a hollow member, asecond. member arranged within the hollow member, the second memberbeing provided with an an- 'nular iiange in proximity to the one endthereof adapted to engage the wall of the hollow member and maintain thesecond member substantially at the longitudinal center of the hollowmember so as to provide a chamber intermediate of the walls of bothmembers, said annular ange being provided with a series of openingswhereby communication between portions of the chamber on opposite sidesof the flange is established, means secured to the other or upper end ofthe second member, arranged to screw into the hollow member, whereby thesecond member is adjustably secured to the hollow member, means wherebythe firstmentioned means is locked in the adjusted position and a gastight connection maintained, said second member being provided with atip at the lower end thereof, and an outer or main nozzle provided witha tapering passage extending longitudinally therethrough and having areduced extended end or shank adapted to abut yagainst the end of thesecond member and incase the tip thereot, the extended end or shankbeing provided with one or more ports at a slight distance from the endthereof whereby communication between the chamber in the hollow memberand the tapering passage in the main nozzle is established and saidpassage utilized as a mixing chamber, the outer or main nozzle beingremovably secured in the end of the hollow member.

27A burner of the class described, comprising a hollow outer member, asecond member arranged within the hollow member, the second member beingprovided with a passage extending longitudinally therethrough and havingan annular flange in proximity to each end thereof, whereby the positionof said second member relative to the Walls of the hollow member ismaintained and a chamber intermediate of the members provided, theflange adjacent the one end of the second member being provided witli aseries of openings for the passage of gas therethrough, a sleeve portionarranged to` receive the other end of the second member and adapted toscrew into the other end of the outer member whereby the second memberis adjustably secured within the outer member, means whereby said sleeveportion is locked in its adjusted position and a gas tight connectionmaintained, and an outer or main nozzle provided with a reduced extendedend or shank arranged to screw into the outer member and adapted to abutagainst the end of the second member, said shank being provided with oneor more ports whereby communication between the chamber in the outermember and the nozzle interior is established.

3. In a burner of the class described, an outer member provided with anopening in its side for the admission of a gas, a nozzle removablysecured et one end of said member and having a reduced end extendinginto said member and provided With a passage extending longitudinallytherethrough, diminishing in size toward lie outer end of said nozzle,seid reduced end being provided with ports arranged at predeterminedpoints, a second nozzle extending longitudinelly Within said member andprovided withV a tip adapted io abut against the extended end of the rstmentioned nozzle whereby the gases flowing through seid second nozzleand through the outer member Wiil made to mingle in 'the passegeo lillevfirst mentioned nozzle, the upper ei'idor' said second nozzle beingconnected with a source of gas supply, and means whereby said secipeepeeCopies of this paient may be obtained for five cents eeei, by eressiiglommssener of Eetents, Weehington, El E.

